Air filter test.....

Found this air filter test, it's done with Duramax air filters but the results are of course universal

I don't know of any credentials to the reports, i just thought it was interesting..

http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm

Hmmm....I would say that those "tests" were performed by GM (or a related company). There is no way that AC-Delco could be the best in all aspects of air filtration. I won't dispute the fact that Delco parts are usually quite good, but they aren't by any means perfect, as that test seems to show.

Tests seemed kinda bias, just my .02

i thought that was a little funny too

I would actually say that the information was pretty fair. It's just the information displayed and how you take it that makes it biased. Take for example that the charts show that K&N have the least amount of restriction, and allow the most amount of air flow. It is a pretty known fact that K&N filters allows more fine dust to pass through then others. Because of the greater air flow and less restriction, more dust is entered. But the amount of dust entered is not substantial enough to make a difference, while the increased air flow entered IS substantial enough to use that particular filter.